oh sure but the question was is the statement abt diode position visavee 12V and ground valid ? as a rule ?

I see the problem in my wiring that is all relay direct power switching is done on the ground side of the load. Optimism !



http://www.caraudiohelp.com/images/relay_for_remote.gif

big deal.

if I wanted to isolate this relays ground from the other grounds on the local ground bolt, I would wire in a diode with

the stripe facing the relay

or the stripe facing away from the relay ?